Self-propelling scooter



Dec. 1, 1936. c. A. A. e. SABAEFF 2,062,830

SELF PROPELLING SCOOTER Filed Sept. 6, 1955 0 1. EM EN 7 .A; 6181 13115 INVENTOR BY. 2,1, F.

ATTORNEY Patented Dec. 1, 1936 v 2,062,830

UNITED stares PATENT o F cE 2,062,830 SELF-PROPELLING SCOOTER Clment A. A. G. Sabaeff, New York, N. Y.

Application September 6, 1935, Serial No. 39,401

"6 Claims. (01. 208-37) My invention relates to self propelling scooters mounted on a driving shaft l3 journaled in a and has particular reference to scooters having bearing l3 attached to the front portion of the pedals for operating their wheels. I v frame I Pinions M are mounted on the ends of A scooter of an ordinary type represents a low the shaft I3 and are in mesh with curved racks 5 two-wheeled vehicle with a steering-handle and a l5 attached by their lower ends to the front ends 8 low platform on which the rider stands with his of pedals I6. These pedals are formed of metal feet. The propelling force, when not coasting, is frames I! having hinges l8 in the rear for shafts furnished by pushing one or the other foot is attached by their inner ends to the sides of against the ground. the rear fork 8. Wooden, or of other suitable 10 Scooters of this type, while providing a healthy material, boards 5 are fastened to the upper 10' and pleasant exercise, cannot be used for any sides of the pedal frames IT. A shield 2| for the extensive riding as the method of propulsion is chain II is supported on the inner edged the very awkward and tiresome. corresponding pedal. The upper ends of the I have found, however, that it is possible to racks l5 are suspended on the ends of tension 7 construct a scooter of the ordinary general shape springs 22. The upper ends of the springs are 15 but provided with a mechanical drive for the attached to the ends of a cross bar 23 mounted rear wheel, the drive being operated by the ridon the upper portion of the frame I. ers weight, alternately shifting it from one foot A transverse bar 24 is supported on the lower to the other, but without otherwise changing portion of the frame I forming a rest for the their positions or removing them from the suppedals in their lower position. Rubber sleeves 2'0 porting pedals. 25 are placed on the bar in order to soften the For this purpose I provide my scooter with a impact with the pedals. I chain drive (or other suitable mechanical drive) The pinions I 4 are mounted on overrunning to the rear wheel from a shaft mounted on the clutches, rotating freely on hubs 26 keyed on the 25 front p n f t s t r fram I provide shaft l3 and provided with tapering grooves or as this shaft with pinions on either side of the recesses 21 for balls or rollers 28. Washers 29 frame, each pinion having a free-wheeling or retain the sides of the pinions; The pinions overrunning clutch inside. The pinions are enengage the shaft l3 only when they are turned gaged by curved racks attached to the front ends in direction of the arrow in Fig. 4, as then the 30 of long pedals suspended on springs in their front rollers become wedged in the recesses against 30 portions. The rider, standing on these pedals the inner side of the pinion bore. When turned and alternately shifting his weight from one foot in the opposite direction, the pinion entrain the to the other, will cause the racks to reciprocate rollers into the deeper portions of the recesses thereby alternately turning the pinions and rowhere they do not have any wedging action.

tating the rear wheel. The steering handle pro- Likewise, if the pinions are stationary and the 35 vides as in ordinary scooters a means to brace or scooter moves forward, the balls are moved into support the rider in his position. the deeper portions of the recesses and release My invention is more fully described in the the pinions. accompanying specification and drawing in I do not wish to limit myself to any particu- 40 whichlar construction of the free-wheeling or over- 40* Fig. 1 is an elevation of my scooter, Fig. 2 is running clutch, as any suitable type of such a rear view of the same, Fig. 3 is a top plane clutches can be employed in my mechanism. view, Fig. 4 is a detail view of a pinion with an The ends of the rear fork 8 are provided with overrunning clutch, Fig. 5 is a detail view of a slots 30 for bolts 3| engaging the shaft 32 of driving shaft with pinions, and Fig. 6 is a secthe rear Wheel so that it can be adjusted hori- 45* tional view taken on the line 6-6 of Fig. 1. zontally for tightening the chain l l.

My scooter consists of a curved tube I forming The rider, when using my scooter, stands with a frame and having an extension 2 for supporthis feet on the pedals l6 and holds the steering ing a front tubular portion 3 in which a steering handle 5. By alternately shifting his (or her) rod 4 is mounted. The rod 4 has a steering weight from one foot to the other, the pedals 50 handle 5 on top and a fork 6 at the lower end and their racks are made to move up and down, for a front wheel 1. The rear end of the tube turning the pinions. The springs 22 retrieve the I has a fork 8 for a rear wheel 9, the latter being racks to their upper position when the weight is provided with a sprocket Ill for a chain II. This transferred to the other foot.

chain is engaged by a driving sprocket l2 In this respect the use of my scooter differs but 55 little from the ordinary scooters, except that by shifting his weight from one foot to the other, the rider at the same time propels the scooter.

My scooter, while providing a pleasant and interesting toy for children, also furnishes an effective means for exercising the muscles of the legs and hips, up to the waist line, being similar in this effect to mountain climbing.

It is understood that my invention in its practical embodiments may be modified in various ways without departing from the spirit of my invention as set forth in the appended claims.

I claim as my invention:

1. In a self propelling scooter, the combination of a frame, a steering post witl'ia wheel ro-' tatively mounted in the front portion of said frame, a shaft transversely supported on the rear end of said frame, a rear wheel rotatively mounted on said shaft, a bearing transversely supported on the front portion of said frame, a driving shaft journaled in said bearing, driving connections between said driving shaft and said rear wheel, pinions onthe ends of said driving shaft, free-wheeling clutches interposed between said pinions and said driving shaft, pedals on either side of said frame pivotally supported by their rear ends on the rear end of said frame, curved arcuate racks supported on the front ends of said pedals, the curvature of said racks being concentric with the pivots of said pedals, said racks being in mesh with said pinions, and means to raise one pedal while the other is being depressed.

2. In a self propelling scooter, the combination of a frame, a steering post with a wheel rotatively mounted in the front portion of said frame, a rear wheel rotatively supported in the rear portion of said frame, a driving shaft rotatively supported in the upper front portion of ;said frame, driving connection between said shaft and said rear wheel, pinions on the ends of said shaft, free-Wheeling clutches in said pinions, pedals on either side of said frame pivotally supported by their rear ends on the rear end of said frame, racks on the front ends of said pedals in mesh with said pinions, springs tending to raise said racks with said pedals, and means to limit the vertical movements of said pedals.

3.: In a scooter, the combination of a frame, a steering post with a front wheel rotatively supported in the front portion of said frame, a rear wheelrotatively supported in the rear portion of said frame, a driving shaft rotatively supported in'the front portion of said frame in a transverse direction thereto, a sprocket on said shaft, a sprocket on said rear wheel, an endless chain connecting said sprockets, pinions on the ends of said driving shaft,;free-wheeling clutches in said pinions, pedals on either side of said frame pivotally supported by their rear ends on the rear portion ,of said frame, racks on the front ends of said pedals in mesh with said pinions, means to raise one pedal while the other is being depressed, and a bar transversely supported on the lower portion of said frame and forming a rest for limiting the downward motion of said pedals, said free-wheeling clutches being adapted to transmit the rotation to said driving sprocket from said pinions in one direction only.

4. In a scooter of the type described, a driving mechanism having in combination a driving shaft rotatively supported in the front portion of the frame of said scooter, said shaft being placed in a transverse direction to said frame, a sprocket on said shaft, a sprocket on the rear wheel of said scooter, an endless chain connecting said sprockets, pinions on the ends of said shaft, free-wheeling clutches in said pinions, pedals on either side of said frame pivotally mounted on the rear portion of said frame, racks on the front ends of said pedals in mesh with said pinions, springs tending to raise said pedals with said racks, and a protecting cover for said chain, said clutches being adapted to transmit the rotation from said pinions to said driving sprocket in one direction only. 7 1

5. In a scooter, the combination of a frame, a steering post rotatively supported in the front portion of said frame, a front wheel rotatively supported in the lower portion of said post, a fork forming a rear end ofsaid frame, a rear wheel rotatively supported in said fork, a driving shaft rotatively supported in the front portionof said frame in a direction transverse to said frame, a driving connection between said shaft and said rear wheel, pinions on the ends of said shaft, free-wheeling clutches in said pinions adapted totransmit rotation from said pinions to said shaft in one direction only, shafts extending from the sides of said fork in a direction transverse to said frame, pedals on either side of said frame, the rear ends of said pedals being rotatively supported on said rear shafts, arcuate racks on the front ends of said pedals, said racks being concentric with said rear shafts, means to limit the downward movement of said pedals, and a yieldable means for raisingsaid pedals.

61- In a scooter, the combination of a frame, a steering post in the front portion of the frame, a front wheel supported on the post, a fork at the rear of the frame, a rear wheel rotatively supported in the fork, a driving shaft supported in the front portion of the frame in a transverse direction to its plane, a driving connection. between the shaft and the rear wheel, rotary members on the shaft at the sides of the frame, free-wheeling clutches in said members, shafts extending from the sides of the frame, pedals, on either side of the frame rotatively supported on the shafts, operative connections between the pedals and the rotary members, means to limit the downward movement of the pedals, and a yieldable means for raising the pedals, the pedalsandthe free-wheeling clutches being adapted to transmit rotation to the shaft when said pedals are moved downward.

CLEMENT A. A. G. SABA'EFFLI. 

